Table 1.
Flavonoid and phenolic compounds detected in A. nilotica flower extract.
| Compound | Retention Time | Area | Area (%) | Concentration (µg/mL) |
|---|---|---|---|---|
| Unknown | 2.299 | 337.98 | 4.16 | Undetected |
| Unknown | 2.637 | 1081.92 | 13.31 | Undetected |
| Unknown | 2.744 | 488.57 | 6.01 | Undetected |
| Gallic acid | 3.38 | 420.91 | 5.18 | 2116.77 |
| Chlorogenic acid | 4.253 | 574.10 | 7.06 | 4572.26 |
| Catechin | 4.637 | 106.39 | 1.31 | 1524.96 |
| Unknown | 4.997 | 58.61 | 0.72 | Undetected |
| Unknown | 5.310 | 174.94 | 2.15 | Undetected |
| Methyl gallate | 5.609 | 44.12 | 0.54 | 140.45 |
| Caffeic acid | 6.057 | 73.77 | 0.91 | 333.93 |
| Unknown | 6.315 | 121.44 | 1.49 | Undetected |
| Syringic acid | 6.615 | 54.70 | 0.67 | 222.45 |
| Pyro catechol | 7.077 | 158.71 | 1.95 | 1303.73 |
| Unknown | 7.551 | 217.63 | 2.68 | Undetected |
| Rutin | 8.054 | 349.54 | 4.30 | 2393.13 |
| Ellagic acid | 8.575 | 57.27 | 0.70 | 683.49 |
| Coumaric acid | 9.309 | 969.16 | 11.92 | 1715.35 |
| Vanillin | 9.808 | 0.00 | 0.00 | 0.00 |
| Ferulic acid | 10.281 | 1381.53 | 16.99 | 5451.04 |
| Naringenin | 10.494 | 0.00 | 0.00 | 0.00 |
| Unknown | 11.325 | 346.87 | 4.27 | Undetected |
| Daidzein | 12.372 | 333.41 | 4.10 | 1190.40 |
| Quercetin | 12.938 | 491.94 | 6.05 | 3733.37 |
| Cinnamic acid | 14.060 | 65.05 | 0.80 | 69.72 |
| Apigenin | 14.644 | 182.79 | 2.25 | 796.88 |
| Kaempferol | 15.061 | 0.00 | 0.00 | 0.00 |
| Hesperetin | 15.676 | 39.19 | 0.48 | 121.39 |